ECG Directory

Welcome to this interactive ECG course.

Although it is one of the oldest paraclinic exams, dating back to the late 19th century, the ECG is still of crucial clinical use. This examination often still poses problems of interpretation to the medical practitioner.

This course aims to help the student, the practicing physician and even the trained cardiologist to improve his knowledge in electrocardiography. It consists of 250 traces of varying complexity with a description of each one by experts. This allows the reader to compare his analysis with that of the experts. In addition, the areas of interest of the ECG can be activated to be clearly highlighted.

We hope that these plots will be useful to readers and will improve their knowledge.

The ECGs are available sorted by keywords and categories.

ECG 083

ECG 083


Basic rhythm

Irregularly irregular rhythm.

P waves


PR interval



Normal axis and duration.

ST segment

Elevation in II, III and aVF, more significant in III than in II.

QT interval



ST segment elevation.
Irregularly irregular narrow QRS tachycardia.


Inferior mycocardial infarction with image of lesion (STEMI), atrial fibrillation.


The ST segment elevation that is more significant in lead III than in II suggests probable occlusion of the right coronary artery, which is responsible for the inferior myocardial infarction. The irregularly irregular rhythm is due to atrial fibrillation.


Ischemia and myocardial infarction


Reading level

1 / 3